Well my Comcast internet service died last night. It was working fine, then a few minutes later it wasn't working. The modem "send" and "online" lights were off.

I tried unplugging it twice, that didn't work, called Comcast, they had me make sure the cable was securely plugged in, then had me disconnect the cable and reconnect it, but nothing worked. Set up a service appointment for tomorrow morning. I unplugged the power cord, went to bed.

This morning I plugged it back in, and it's working again.

I need to work from home today while my air conditioner is being worked on, so I hope it continues to work.

But now I'm worried that I'm in "intermittent problem" land, which would be hard to diagnose and fix.